DE19507635A1 - Analog display of clock time or measured time - Google Patents

Abstract

The time of day or measurement time is first determined by means of an electronic time measuring device. The time is transmitted to an electronic control device. The control device determines from the transmitted time, by means of information stored in the associated electronic memory device, whether, in which direction and by how much one or more display devices are moved to display the time of day or the measured time. The one or more display devices display the time with one or more display scales. The one or more display devices are then moved by means of one or more drive devices by the predetermined amount in the predetermined direction.

Description

The present invention relates to a method and a device for analog display of a clock or measuring time.

Known methods or devices of the aforementioned Set the clock or measurement time by the position of a type or several display devices, in particular pointers relative to one or more display scales. Are multiple pointers available, e.g. B. each a pointer for hours and minutes, so a pointer is usually driven directly while the other pointers are moved along a gear. The pointers are evenly spaced by equal amounts in moving in the same direction. The display scales are circular or closed in a ring and exhibit a uniform Classification on. Classifications of the display scales are common Sixties division - for seconds or minutes - or in twelve fer division - for hours.

For many purposes, it would be beneficial instead of technical conditional rigid form and division of the display scales also to be able to choose other scale divisions or forms that better adapted to the needs of each application are. In addition to the technical aspect, the possibility of a Detachment from the previous rigid scale division and -form completely new creative possibilities for watch design open.

There is therefore the task of a method or a device to propose a broad freedom of choice of display scale division and shape.

The task is accomplished by a method of the type mentioned at the beginning Kind solved, which is characterized in that

• - The clock or measuring time by means of an electronic  Timing device is determined,
• - The time or measurement time of an electronic tax facility is transmitted,
• - The electronic control device from the transmitter telten time or measuring time by means of the in a audible electronic storage device The information stored determines whether and in which Direction and by what amount one or more Display devices for displaying the clock or measuring time to be moved
• - The one or more display devices the clock or measuring time based on one or more Show display scales,
• - And the one or more display devices closing by means of one or more connections drive equipment by a certain amount in the certain direction to be moved.

The device according to the invention that solves the problem gangs mentioned is characterized by

• - An electronic timing device for determining the clock or measuring time,
• - One with the electronic timepiece linked electronic control device,
• - Ver with the electronic control device bound electronic storage device, the ge is suitably designed to at the clock or measurement time
• - Store information about whether and in what direction and by what amount one or more re display devices for displaying the clock or Measuring time should be moved, as well
• - one or more by means of one or more to drive devices movable display devices to display the clock or measuring time using a or several display scales.

The invention is based on the principle of real physi  cal display device - usually a pointer - from the To largely separate time measurement and determination. The means known methods of time measurement certain clock or measuring time lies in the electronic control device in the form of a so-called vector pointer. The vector pointer contains at for example, the indication of the currently determined clock or measurement time in hours, minutes and seconds. The values of the vector according to the progress of the clock or Measuring time at regular intervals - for example one second de - updated.

This value of the Vector pointer is now - in contrast to known methods and devices - not used directly to drive the directions of the display devices in also uniform Gaps to move even amounts. Rather it will based on the current clock or measurement time Value of the vector pointer by means of the in the associated elec tronic storage device stored information be is true whether and in which direction and by what amount the Move the display devices to display the clock or measuring time should. For example, the value of the vector pointer determines which corresponds to the current clock or measuring time, in which Memory vector - e.g. B. for hour, minute and second - the electronic storage device ent the required values are holding. The ones contained in the particular memory vector Information values indicate whether and in which direction and around what amount the real display devices - e.g. B. for Hour, minute and second - should be moved.

The concept of the invention is made possible by the extensive doors time measurement / determination and display of the clock or Measurement time shows a very extensive freedom in the Design of the display scales for the clock or measuring time. Next usual clocks with hour, minute and possibly second hands can the concept of the invention also on short-term, stop and Countdown clocks are applied. Here is, depending on the application  purpose, if necessary, for example, only a single one Minute hand or second hand sufficient.

The concept of the invention can be seen to be sufficiently powerful capable electronics and mechanics provided, also on the Display shorter times, for example tenths of a second, be expanded. On the other hand, the invention is also to display very long times, such as days, weeks, months or Suitable for years.

The invention is of the special kind of time measurement completely independent and can be combined with all known methods of time measurement can be used. It become almost completely arbitrary scale divisions and forms enables, the only necessary requirement is that the in information stored in the electronic storage device tion - usually the memory vectors specified above - suitable to the used ad scale to a to get a meaningful display of the clock or measuring time.

The display scale no longer has to be circular or ring-shaped be closed. Linear scales are also possible Lich or, for example, display scales in the form of quarter or Semicircles.

The scale division is also freely selectable. In addition to the be Everyone knew uniform scale divisions other scale divisions are used, provided that in the information contained in electronic storage devices are adjusted accordingly.

For example, it is possible to use 24 hour scales where the scale marks for the night hours are relatively dense lie together while the scale marks for the daytime hours are further separated from each other. That way it will possible, a more precise and clearer for the daytime hours Display hours to reach.  

If the invention is used in a countdown clock - at for example on the scoreboard of a larger sports facility -, the scale ranges close to zero can be ge compared to the other scale ranges, it is significantly stretched to be close to zero an easier and more accurate Enable reading.

Instead of moving pointers in front of fixed display scales can also move moving display elements te in front of a fixed pointer as a display device Display of the clock or measuring time can be used.

In the simplest case is in the electronic storage device direct to any possible value of the clock or measuring time the complete information about whether and in which direction and by what amount the display device movements should be moved. In this case, it works The method according to the invention is particularly simple since the tax device, the information read from the memory device Mations can use immediately. However, in this Case the storage space required in the storage device extraordinary big.

Therefore, to reduce the space required be provided that in the electronic storage device using known methods for data reduction only for a subset of the possible clock or measurement times the informa tion on whether and in what direction and by what amount the display devices are to be moved immediately ge is stored and based on the electronic control device that stored in the electronic storage device Information determines the complete information about whether and in what direction and by what amount to one given display or measuring time moves the display devices should be. For example, it is possible with a watch time display, whose - as with known clocks - circular Second display scale has an even division,  ver to the specification of the second value in the memory vector waive and instead just a certain advance the required amount in the control program of the device to record. In addition, everyone else also gets known methods of data compression and reduction in Question.

A particularly large reduction in the memory required place can be reached if the information about whether and in which direction and by what amount the display is directions are moved at a given time or measurement time should, at least partially in the form of one or more ma thematic functions in the electronic storage device device is stored and the electronic control device at a given time or measurement time using the elec tronic storage device stored mathematical Functions determines whether and in which direction and by what Chen amount the display devices are to be moved. For example, on a linear minute scale, the minus ten marks at a growing square distance from each other sets, so must in the electronic storage device le only the assignment function y = a · (x² - (x-1) ²) is saved , the value of a resulting from the technical execution tion of the drive device for the minute display device and the length of the minute display scale. The electronic control device is then able to each Minute value x of the vector pointer, the corresponding value y by the the minute hand must be moved to calculate. Only then when the minute hand ends the linear display reached, special instructions are still required to the minute hand back to the beginning of the linear scale move.

The method according to the invention is particularly simple and implement the device according to the invention if the Drive devices for the display devices one or include multiple stepper motors. In this case, the  Storage device as information about whether and in which Direction and the amount by which the display devices are moved need to be simply the number of steps required Stepper motors can be saved. But there are themselves understandably all other drive devices conceivable, for example DC servo motors. In this case if necessary, through suitable control or control mechanisms, at for example differential or incremental encoders that Direction and distance of movement of the display devices con be trolled.

Basically, every known embodiment is a time measurement device suitable for the inventive method. in the In the simplest case, for example with a stopwatch, it can are a time measuring device, the clock signals counts. The timing signals can be, for example, from one mechanical oscillator or from an electrical oscillation circle or from a quartz oscillator or from an atomic clock or come from a time signal transmitter.

The electronic time measurement advantageously transmits direction the clock or measuring time in digital form to the elec tronic control device, so that the transmitted Can easily process current values.

Is the available storage space in the elektroni rule storage device sufficiently large, so in the electronic storage device also multiple sets of In information about whether and in which direction and about which Amount at a given clock or measurement time directions are to be moved, saved. So that can for example, the same clock or measurement time at the same time different display devices with different types scale are shown.

To start the method according to the invention, see Next Education of the invention provided that on the creation of a  Reset signal or the application of the power supply to the electronic time measuring device and / or to the elec tronic control device the electronic time measurement towards a defined reference clock or measurement time is set and the display devices to the display value of this reference clock or measurement time corresponds. This way when you reset or initia lize the display device in a simple manner for it ensures that both the virtual vector pointer and the real display devices a specific, defined and Appropriate reference point from which from time solution and time update - through the vector pointer - and Time display - by the display devices based on the display scaled - done.

To reset or initialize the device or in the event of deviations of the specific clock or measuring time from actual time or measurement time or to set a The starting time for countdown clocks is in further education by the Erfin provided that by applying control signals the electronic time measuring device and / or to the electro African control device, the electronic timepiece can be set to a desired clock or measuring time. Such actuation methods are generally electronic Clocks known as quartz or radio clocks.

The electronic control device is advantageous as a micro processor trained, in which also the electronic timekeeping device and / or the electronic storage device can be integrated. As an electronic storage device is in particular a RAM or ROM or PROM and EPROM or EEPROM or flash memory suitable.

The one stored in the electronic storage device Information about whether and in which direction and about which Amount at a given time or measurement time directions should preferably be moved over a  Programming input on the electronic control device and / or program on the electronic storage device mable and / or otherwise interchangeable or changeable. This is particularly useful when the electronic Storage device stored information set in adaptation to the used, preferably interchangeable display scales is interchangeable or in the presence of different In formation records in the electronic storage device is suitably selectable. In this case it is simple possible to use the same hardware for display devices with under different display scales to use by each an In suitable for the display scale used formation set saves or selects. Is the fiction appropriate device designed so that the display scales are designed to be interchangeable, so this can be done in a simple manner a completely different appearance of the display device will be realized. This way, with little effort one adapted to the needs of the specific user Display scale, or the user can changing practical needs or simply fashion or following his needs for variety, each select a "new watch" with a completely different appearance len.

The inventive method and the inventive front direction are based on several execution examples games explained. The drawings show:

Fig. 1 is a block diagram of the principle of a basic embodiment of the present invention;

Fig. 2 is a flowchart of a first embodiment of the inventive method;

Fig. 3 is a flowchart of a second exemplary embodiment of the method according to the invention;

Fig. 4 is a flowchart of an embodiment of the inventive method in the initialization out the method or apparatus of the invention;

5 is a block diagram of a first Ausführungsbei game device of the invention.

Fig. 6 is a circuit diagram of a second embodiment example of the device according to the invention.

Fig. 1 shows a block diagram of the principle of a basic embodiment of the present invention to illustrate the inven tion principle. The clock or measurement time is indicated by the current values of a vector pointer 100 . In this embodiment, the vector pointer 100 has three values, one each for hour, minute and second. The vector pointer 100 is determined and influenced by a controller 101 . On the controller 101 , in addition to a time signal 102, control signals or reference point signals 104 , which may have been entered via a setting button 103 , are generated which are generated when the power supply is applied (power on) or when a reset signal is applied (reset) ( 104 a).

At the same time, the values of the vector pointer 100 also indicate from which storage locations of the electronic storage device the control device has to obtain the information - in the form of a so-called storage vector 105 - about whether and in which direction and by what amount the display devices are to be moved . For this purpose, this memory vector 105 contains three values, again one each for hour, minute and second. These values of the memory vector 105 are then forwarded to a step clock and direction controller 106 . In this exemplary embodiment of FIG. 1, the display devices are each moved by a stepper motor for hour, minute and second. In order to generate the necessary step cycle for the three stepper motors, the exemplary embodiment has a step cycle generator 107 . The output values of the step clock and direction controller 106 are passed on to the motor controller 108 and from there passed on to the drivers 109 of the three stepper motors 110 for hour, minute and second. A determined memory vector of 0, +1, -10 means, for example, that the pointer for the hour display is not moved, the minute pointer is moved in one direction by one clock step of its stepper motor and the stepper motor for the second hand and the second hand 10 stepper motor steps in the other direction moves.

Fig. 2 shows a flow chart of a first embodiment of the inventive method. The flowchart describes the method in an embodiment of a display device according to the invention, each having a movable display device by means of a stepper motor for seconds, minutes and hours, each with a display scale. In the exemplary embodiment in FIG. 2, it is assumed that a time interrupt 201 is triggered by a clock signal at intervals of one second. In the next method step 202 , the control device then fetches - typically a microprocessor provided with a corresponding control program - the current data of the memory vector (V) for a second (sec) from a memory location of the memory device, its address (address) by the current one Values of the vector pointer (VZ) is specified.

If it turns out in a query 203 that the seconds value of the vector pointer points to the last memory vector address - that is to say, for example, that the seconds vector pointer is at 59 when the seconds display is running from 0 to 59, the seconds can -Vector pointer not to the next memory vector position - in this case to the non-existent 60 - to be raised (method step 204), but must be set to the initial value - ie to zero - since a full minute is completed (method step 205) .

If the vector pointer still points to the next memory vector position position can be increased (method step 204), e.g. B. from 48 to 49, so directional signals, the number of which  results from the values of the memory vector, output (Ver step 214) in order for the necessary number of steps clocking the second hand to worry (method step 215). The minute hand and the hour hand are not moved, since the values to be displayed for the minute and the hour haven't changed.

But the second vector pointer is on the last memory vector address, d. H. in this example, a full Minute completed, so the specified process steps in the same way for the minute value of the vector time gers or the minute hand repeated (procedural steps 206, 207, 208, 209). The seconds value of the vector pointer will be set to its initial value - zero in the example, and Appropriate direction signals are then output ben (method step 214).

The minute vector pointer is on the last memory vector radress for the minutes (step 207) - d. H. For the example given becomes a full hour at 60 minutes completed - so must the above for the hour hand specified process steps are repeated (process steps 210, 211, 212, 213), and the minute value of the vector pointer is set to its initial value - d. H. in the example Set to zero (method step 208) and the corresponding directional signals are output (method step 214).

In any case, corresponding direction signals, their Number results from the values of the memory vector, of which Control device output (method step 214), and a corresponding number of step acts is then displayed the stepper motors for seconds, minutes and possibly Hour hand output (method step 215), with which the This process sequence ends (process step 216). At the next Most time interrupt (method step 201) begins described the process anew.  

The Fig. 3 describes a method of the FIG. 2 largely similar method, but which is so far still simplified, as in this embodiment, a circular Totally enclosed seconds scale with uniform scale division is situated in front. In this case, it is not necessary to specify a second value in the memory vector. Rather, only the second hand at each time interrupt 201, which - as in the exemplary embodiment of FIG. 2 - takes place at intervals of one second, then has to be adjusted in the same direction by a fixed, constant number of step clocks (method step 302). Here too, an adjustment of the minute or hour display devices must then be checked to determine whether, in addition, B. when reaching a full minute or hour, the minute or hour hand must also be adjusted (method steps 303, 304). The subsequent method steps 206 to 216 for the possibly necessary adjustment of the minute or hour display device are the same as in the embodiment of FIG. 2 and therefore have the same reference numerals.

Fig. 4 shows schematically the method when applying the power supply (power on) or when applying a reset signal (reset) to a display device according to the invention. When a reset signal is applied or the voltage supply is applied (method step 401), the display devices used each move to their specified reference point (method step 402). In the case of moving pointers, these can be pointer positions which are defined and controllable by limit switches, light barriers or the like. The values of the vector pointer are set to defined initial values (step 403) which correspond to the reference points of the display devices specified above. This completes the initialization of the device according to the invention (step 404).

Fig. 5 is a highly schematic block diagram showing a first embodiment of a display device according to the present invention. In this embodiment, the time measuring means 1 a, 1 b, the control device and the memory device 1 are in a microprocessor c 1 d formed and combined. The microprocessor 1 d is supplied by a power supply 2 a with the necessary operating voltage. The timing signals from a quartz oscillator 3 a who counted by the microprocessor 1 d and used to determine the current clock or measuring time. The microprocessor 1 d is connected via lines 13 a, among other things, to the connections 10 a for a serial interface. The control program and the information record (s) can be loaded into the microprocessor and, if necessary, changed via this serial interface. In addition, the microprocessor has connections 11 a for limit switches in order to control the reaching of the reference points by the display devices for hours, minutes and seconds when the voltage supply is applied. Operating voltage is applied to the micro-processor-1 d, the display devices run their reference points, and the microprocessor 1 starts d the time clock signals of the quartz oscillator 3 a to count. The zero position for all three display devices and the corresponding initial value 0, 0, 0 for the vector pointer are therefore expediently chosen as the reference point or initial value.

The microprocessor 1 d carries out the method according to the invention. The step cycles determined in the method for the second, minute and hour hands are each forwarded via lines 13 a to a converter / driver 4 a, 5 a, 6 a for the three display devices and from there to the corresponding motor connections 7 a, 8 a, 9 a for the step motors of the hour, minute or second display devices.

Of course, it would be possible to use an external clock module, for example a DCF-77 radio clock module, instead of the quartz oscillator 3 a, whose time output values are supplied in digital form to the microprocessor 1 d.

Fig. 6 shows a circuit diagram for a second exemplary embodiment of a display device according to the invention in detail. Compared to the embodiment of FIG. 5, there are only two hands (for hour and minute) before. The same components are provided with the same reference numerals in FIGS. 5 and 6.

The circuit of FIG. 6 represents an analog, programmable clock control for two hands (hour, minute). Each pointer (display device 14 ) is driven by a unipolar stepper motor (drive device 16 ).

The minute hand moves, corresponding to 60 minutes, on 60 different positions on its display scale 15 . The hour hand has 48 positions on its display scale 15 , so that one position is available for every quarter of an hour. All pointer positions are only determined during programming.

IC1 is a single-chip microprocessor 1 d of the MC68HC711 family. In addition to the normal functions of a single-chip microprocessor, it also contains a once-programmable 4k EPROM memory, which is used to record the program and data. The stepper motors (drive devices 16 ) are controlled by converters / drivers of the UCN5804 type.

Via the serial interface (K5) in addition to Control program dubbed a vector memory for each motor, the direction and number of steps for each position next position is saved.

In contrast to a normal analog clock control, the Time with hour, minute and second internally in vector hands saved. These virtual pointers have the same Task, the associated memory location of the memory vector  admit. This is achieved by using software counters count a constant offset.

If the circuit is connected to voltage, the rea len and virtual pointers are matched. To do this, the pointers are moved to a reference position, which is monitored by limit switches via K2. At the same time the vector pointers to the starting position of the memory vectors set.

In normal watch operation, a clock pulse occurs every second Interrupt via a free running internal counter of the 68HC7II. The software determines whether hours and / or minutes need to be adjusted. For adjustment, the Location to which the vector pointer points, the direction and Read out step data. The vector pointer is incremented or when it was in the last position of the vector set the initial value. In other parts of the program Data processed and the control signals to the converter / Trei spent on. The stepper motors run in full step mode driven, so to save energy, the current flow in the motor windings after reaching the pointer position via the OE input gear can be interrupted.

The current time is set interrupt-controlled via button on K4 by pressing XIRQ and another Button. The hour and minute adjustment runs analog to that Adjustment in normal operation. With the second adjustment the vector pointer is set to the initial value.

The circuit is powered by means of voltage regulator U1 stabilized to 5 V while the input voltage is on K1, depending on the motors used, between 6-12 V vari can.

Claims (23)

1. A method for analog display of a clock or measuring time, characterized in that

• - The clock or measuring time is determined by means of an electronic time measuring device ( 1 a),
• - The clock or measuring time of an electronic control device ( 1 b) is transmitted,
• - The electronic control device ( 1 b) from the transmitted clock or measuring time by means of the information stored in an associated electronic storage device ( 1 c) determines whether and in what direction and by what amount one or more re display devices ( 14 ) for display the clock or measuring time are moved,
• - The one or more display devices ( 14 ) display the time or measurement time using one or more display scales ( 15 ),
• - And the one or more display devices ( 14 ) are then moved by means of one or more drive devices ( 16 ) by the specific amount in the specific direction.

2. The method according to claim 1, characterized in that in the electronic storage device ( 1 c) for any possible value of the clock or measuring time, the complete information is stored about whether and in which direction and by what amount the display devices are moved should. 3. The method according to claim 1, characterized in that in the electronic storage device ( 1 c) by means of known methods for data reduction only for a subset of the possible clock or measurement times, the informa tion about whether and in which direction and by what amount the Display devices ( 14 ) are to be moved, stored immediately and the electronic control device ( 1 b) uses the information stored in the electronic storage device ( 1 c) to determine the complete information about whether and in which direction and by what amount at a given time Clock or measuring time the display devices ( 14 ) are to be moved. 4. The method according to claim 1 or 3, characterized in that the information about whether and in which direction and by what amount the display devices ( 14 ) are to be moved at a given time or measurement time, at least partially in the form of one or more mathema table functions in the electronic Speichereinrich device ( 1 c) is stored and the electronic control device ( 1 b) at a given time or measurement time based on the mathematical functions stored in the electronic storage device ( 1 c) determines whether and in which direction and the amount by which the display devices ( 14 ) are to be moved. 5. The method according to one or more of the preceding claims, characterized in that the electronic time measuring device ( 1 a) counts clock signals. 6. The method according to claim 5, characterized in that the timing signals from a mechanical oscillator or from an electrical resonant circuit or from one Quartz oscillator or from an atomic clock or from one Time signal transmitters. 7. The method according to one or more of the preceding claims, characterized in that the electronic time measuring device ( 1 a) transmits the clock or measuring time in digital form to the electronic control device ( 1 b). 8. The method according to one or more of the preceding claims, characterized in that upon the application of a reset signal or the application of the voltage supply to the electronic time measuring device ( 1 a) and / or to the electronic control device ( 16 ) towards the electronic time measuring device ( 1 a) is set to a defined reference clock or measuring time and the display devices ( 14 ) are set to the display value which corresponds to this reference clock or measuring time. 9. The method according to one or more of the preceding claims, characterized in that by the application of control signals to the electronic time measuring device (1 a) and / or to the electronic control device (1 b), the electronic time measuring means (1 a) to a ge wished Clock or measuring time can be set. 10. Device for analog display of a clock or measuring time, characterized by

• - An electronic time measuring device ( 1 a) for determining the clock or measuring time,
• - An electronic control device ( 1 b) connected to the electronic time measuring device ( 1 a),
• - An electronic storage device ( 1 c) connected to the electronic control device ( 1 b), which is designed to store information about whether and in which direction and by what amount one or more display devices ( 14 ) are to be moved to display the clock or measuring time, and
• - One or more by means of one or more drive devices ( 16 ) movable display devices ( 14 ) for displaying the clock or measuring time using one or more display scales ( 15 ).

11. The device according to claim 10, characterized in that it comprises display devices ( 14 ) and display scales ( 15 ) for hours and / or minutes and / or seconds. 12. The apparatus of claim 10 or claim 11, characterized in that the display devices ( 14 ) comprise one or more pointers, the pointers and / or the display scales ( 15 ) are movable relative to each other. 13. The device according to one or more of claims 10 to 12, characterized in that the display scales ( 15 ) at least partially a non-uniform division tra gene. 14. The device according to one or more of claims 10 to 13, characterized in that the display scales ( 15 ) are at least partially linear or otherwise not closed. 15. The device according to one or more of claims 10 to 14, characterized in that the display devices ( 14 ) are at least partially movable by means of one or more stepper motors. 16. The device according to one or more of claims 10 to 15, characterized in that the electronic control device ( 1 b) is designed as a microprocessor ( 1 d). 17. The apparatus according to claim 16, characterized in that the microprocessor ( 1 d) contains the electronic Zeitmeßeinrich device ( 1 a). 18. The apparatus of claim 16 or 17, characterized in that the microprocessor ( 1 d) contains the electronic storage device ( 1 c). 19. The device according to one or more of claims 10 to 18, characterized in that the electronic storage device ( 1 c) is a RAM or ROM or PROM and EPROM or EEPROM or flash memory. 20. The device according to one or more of claims 10 to 19, characterized in that the information stored in the electronic storage device ( 1 c) represents whether and in what direction and by what amount the display devices at a given time or measuring time (14) are to be moved, via a programming input (10) is connected to the electronic control device (1 b) and / or on the electronic storage means (1 c) can be programmed and / or otherwise interchangeable or changeable ver. 21. The device according to one or more of claims 10 to 20, characterized in that in the electronic storage device ( 1 c) one or more sets of information on whether and in what direction and by what amount to a given clock or Measuring time the display devices ( 14 ) are to be moved, can be stored in bar. 22. The apparatus of claim 20 or 21, characterized in that in the electronic Speichereinrich device ( 1 c) stored information set in adaptation to the used, preferably interchangeable display scales ( 15 ) suitably interchangeable or in the presence of different information sets in the electronic Spei chereinrichtung ( 1 c) is suitable selectable. 23. The device according to one or more of claims 10 to 22, characterized in that the electronic time measuring device ( 1 a) and / or the electronic control device ( 1 b) via a reset input for applying a reset signal according to claim 8 and / or Control input ( 12 ) for applying a control signal according to claim 9.